A Song Thrush Eating Holly Fruits (IMAGE) University of Exeter Caption A song thrush eating holly fruits. The long fruiting period of hollies from autumn to late winter overlaps with the northward migration of song thrushes and, therefore, these have the potential to disperse holly seeds at long distances towards cooler latitudes. Credit David Chapman Usage Restrictions This image may only be used with reports of this research License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.